Vertical distributions of the early life stages of walleye pollock (Theragra chalcogramma) in the Southeastern Bering Sea

Autor: Janet T. Duffy-Anderson, Tracey I. Smart, Elizabeth Calvert Siddon
Rok vydání: 2013
Předmět:
Zdroj: Deep Sea Research Part II: Topical Studies in Oceanography. 94:201-210
ISSN: 0967-0645
DOI: 10.1016/j.dsr2.2013.03.030
Popis: The present study examines vertical distributions of the early life stages of walleye pollock (Theragra chalcogramma) in the Southeastern Bering Sea to assess ontogenetic and diel vertical migration in relation to development and habitat. Walleye pollock demonstrated a decrease in the depth of occurrence following hatching, indicating an ontogenetic change in vertical distribution. Eggs occurred deepest in the water column and early juveniles occurred shallowest. Vertical distributions were related to the date of collection, water column depth, and thermocline depth. Non-feeding stages (eggs and yolksac larvae
Databáze: OpenAIRE